Package org.apache.flink.runtime.blob

Class VoidBlobWriter

java.lang.Object

org.apache.flink.runtime.blob.VoidBlobWriter

All Implemented Interfaces:

BlobWriter

@VisibleForTesting
public class VoidBlobWriter
extends Object
implements BlobWriter

BlobWriter which does not support writing BLOBs to a store. This class is mainly used for testing purposes where we don't want to store data in the BLOB store.

Field Summary

Fields inherited from interface org.apache.flink.runtime.blob.BlobWriter

LOG

Constructor Summary

Constructors

Constructor	Description
VoidBlobWriter()

Method Summary

Modifier and Type	Method	Description
boolean	deletePermanent(JobID jobId, PermanentBlobKey key)	Delete the uploaded data with the given JobID and PermanentBlobKey.
static VoidBlobWriter	getInstance()
int	getMinOffloadingSize()	Returns the min size before data will be offloaded to the BLOB store.
PermanentBlobKey	putPermanent(JobID jobId, byte[] value)	Uploads the data of the given byte array for the given job to the BLOB server and makes it a permanent BLOB.
PermanentBlobKey	putPermanent(JobID jobId, InputStream inputStream)	Uploads the data from the given input stream for the given job to the BLOB server and makes it a permanent BLOB.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VoidBlobWriter

public VoidBlobWriter()

Method Detail

putPermanent

public PermanentBlobKey putPermanent(JobID jobId,
                                     byte[] value)
                              throws IOException

Description copied from interface: BlobWriter

Uploads the data of the given byte array for the given job to the BLOB server and makes it a permanent BLOB.

Specified by:

putPermanent in interface BlobWriter

Parameters:

jobId - the ID of the job the BLOB belongs to

value - the buffer to upload

Returns:

the computed BLOB key identifying the BLOB on the server

Throws:

IOException - thrown if an I/O error occurs while writing it to a local file, or uploading it to the HA store

putPermanent

public PermanentBlobKey putPermanent(JobID jobId,
                                     InputStream inputStream)
                              throws IOException

Description copied from interface: BlobWriter

Uploads the data from the given input stream for the given job to the BLOB server and makes it a permanent BLOB.

Specified by:

putPermanent in interface BlobWriter

Parameters:

jobId - ID of the job this blob belongs to

inputStream - the input stream to read the data from

Returns:

the computed BLOB key identifying the BLOB on the server

Throws:

IOException - thrown if an I/O error occurs while reading the data from the input stream, writing it to a local file, or uploading it to the HA store

deletePermanent

public boolean deletePermanent(JobID jobId,
                               PermanentBlobKey key)

Description copied from interface: BlobWriter

Delete the uploaded data with the given JobID and PermanentBlobKey.

Specified by:

deletePermanent in interface BlobWriter

Parameters:

jobId - ID of the job this blob belongs to

key - the key of this blob

getMinOffloadingSize

public int getMinOffloadingSize()

Description copied from interface: BlobWriter

Returns the min size before data will be offloaded to the BLOB store.

Specified by:

getMinOffloadingSize in interface BlobWriter

Returns:

minimum offloading size

getInstance

public static VoidBlobWriter getInstance()